Miley Cyrus and Ariana Grande perform at 'March For Our Lives' rally

Miley Cyrus joined millions at one of many March For Our Lives events in America today (March 24).

Arianna Grande also showed her support, as she sang 'Be Alright' at the same event.

Performing 'The Climb' in Washington D.C, she supported the many students who are demonstrating against the availability of guns in the U.S., resulting in several high profile mass killings in schools.

Wearing a peace sign on her face in glitter, the 'Wrecking Ball' star said a few words to the crowd: "Thank you for being here. I love you so much. Never again. You guys are so incredible,” she said. “I find myself lucky to be in presence of all of you wonderful people fighting for what is right. Love y’all so much, thank you.”

The marches were organised by the survivors of Marjory Douglas Stoneman High School shooting which saw 17 people dead on Valentine's Day.

Elsewhere in New York, Paul McCartney joined the march and spoke about how his best friend John Lennon was shot nearby.